Games like Classroom Akumu (教室悪夢)

"Dread Dawn" is an open-world zombie survival sandbox game set in a quarantined city with a robust storyline and various public facilities. As a student left behind, you must survive by defending your camp and gathering resources with other survivors. Utilize materials for construction to enhance your chances of survival. Follow the developer on social media for updates.

"Fargone" is a single-player shooter game set in the post-apocalyptic wasteland of The Barrens, where you must survive against infected undead and hostile factions. The game features a dynamic faction system, camping and fortification mechanics, and an RPG skill system. Explore the diverse and atmospheric zones, scavenge for 100s of items, and build up your survivor in this immersive and immersive open-world experience, but beware of bugs that may affect gameplay.

"Collision Course" is a sandbox survival game set in a prehistoric world 70 million years ago. After crash landing, you must scavenge for resources and fight off dinosaurs and other obstacles to repair your spaceship and return to the present. The game currently offers a free-exploration experience, with plans to add missions and story elements in the future.

"Frozen State" is a survival game set in a man-made ice age, where you must repair your transport and survive in a vast, randomly generated world filled with humans, military groups, and alien hybrids. With a deep crafting system, diverse enemies, and the goal of repairing your transport while uncovering the city's story, the game offers rogue-like and normal modes, and features three main characters. Dynamic weather conditions and a large open world complete the experience.

Interstellar Marines is a tactical sci-fi First Person Simulator, inspired by movies like Aliens and games like Half-Life. It offers singleplayer and co-op/PvP gameplay, with dynamic environments and non-scripted AI. The game aims to evolve the FPS genre with its blend of sci-fi, role-playing, and military realism.

In "Cannibal Crossing," players manage a group of frontierspeople surviving in a cannibal-infested wilderness. Scavenge for resources, craft tools, and strategize defenses to protect your colony and ward off hostile cannibals. Balance resource management, exploration, and survival as you navigate through a procedurally generated world in this tense and gripping simulation.

"Noct is a horror shooter game with both multiplayer and single-player modes, set in a post-apocalyptic world filled with terrors. The 2D top-down game features spectacular visuals, an excellent soundtrack, and a fabulous atmosphere. Players must scavenge for supplies, combat enemies, and survive in this persistent online world."

"The Withering" is a post-apocalyptic survival strategy game. Collect resources, build and maintain your base, and protect it from zombie-like creatures called "Withered". Manage your health, hunger, and sanity while navigating through a procedurally generated world with dynamic weather and time of day systems.

"TRAPPED is a action-packed game that can be played as a single-player or with upsets to 2 players in both co-op and PVP modes. In a post-apocalyptic world, players must work together to capture critical points and survive against mutant creatures and the army, who are determined to eradicate all. The game features robust mechanics and allows friends to join at any point through Steam."

Road to Eden is a third-person cooperative survival game set in a post-apocalyptic world overrun by alien forces. With no memory of your past, you must join other survivors on the dangerous journey to Project Eden, the last hope for humanity. Crafting in the game is recipe-based, with players learning new recipes by finding books and broken objects, and gaining experience to level up their characters. The game can be played as a single player or on official/player-created servers.